Pantograph



W. H. HOPE.

PANTOGRAPH. APPUCATION FILED MAR. 19. 1921.

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ATTORNEY Patented Nov. 2 1922.

W. H. HOPE.

PANTOGRAPH.

APPUCATION FILED MAR. 1 9. 1-921.

1,437,307. ent Nov- 28,1922.

4 SHEETS-SHEET 3- INVENTOFK ATTORNEY W. H. HOPE.

PANTOGRAPH.

APPLICATION FILED MAR. 19, I92!- Patented Nov. 28, 1922.

4 SHEETS-SHEET 4.

1 INVENTOR FIGG ATTORNEY Patented Nov. 28, 1922.

WILLIAM 1i, HOPE, or PROVIDENCE, RHODE ISLAND.

ranr emrm Application.filedMarch.13, 192}. SerialNo, 453,634,.

Toall in item tmasy concern;

Bedtlgnown that. I, l VI LIAM, Horn, a citizen ofthe, UnitedStates,residing. at. Prc i nre. a the c y oi, roviden and. Stateof llhode.Island, have invented new and useful Improvements in a'Pantog ljaph, ofwhich the, followingis. a specification- This invention relates to.certain new and,

useful, improvements in a pantograplrand it has for itslprinoipal objectto provide an improved. mechanism, and constructipn wherein. throughelectrical means the cutter orcuttersmay be. controlled by the. stylusand; its association v to and cooperation with the design, to, rendersaid cutter or cuttersoperative and inoperative depending upon thenature of the contact. between the. stylus and. the design.

'fllhev invention further resides in: provid' ing a metallic designplatecoatedl with an electrical resistance material so. as, to leave adesign formed of this resistance material orto have the back groundformed of this resistance material, and the uncoated or ex;- posedportion of the metal plateconstituting the. background. or the design,respectively.

A further object of this invention is to pro vide, a machine havingabedfonwhi ch. a me;

tallic design plate. has electrical contact, a stylus for movement over.or across the plate with portions of the latter coated with a resistancematerial whereby electrical circuit between the bed and, stylusv may bevmadev or broken according; to. the contact. of; the stylus with theuncoated or, coated portions of the plate, and electrical means. incincuit with the bed and. stylus for raising the cutter or cutters fromthe work or permitting the n to become operatively disposed according tothe particular contact being made by the. stylus.

The invention also hasforits object the provision of variable motiontna-nsmitti'ng mechanism between the stylus and the cutter support andbetween the stylus andthe work support.

The invention alsov is found to reside in an improved pantographconstruction wherein the stylus and its carriage. is continuouslyreciprocated across the. design and has'associated means for advancing,or moving. the stylus carriage step by step. or intermittently in adirection.transversely with respect to the reciprocatory motion of thecarriage wherey hesn 'r e i n will: en ally be r ced y h tylsiapamllehpre et rm ned.l nes.

F rth r, t e nventi reside in e. f are qns uc im and the arr gements andcombinations of parts described in, 1Q- tail in .thefollowingspecification and su ccinctlydefined inthe. appended claims,ref

erencesbeing made to' the, accompanymg drawings v wherein,

Figure 1 isa'frontelevation of a pantograph constructed in accordancewith the P s nt v nt ve a d embo y ng. he. m m vem n there Figure 2 isarea-r el'eva-ticnthereof;

F 'l'gure -8 is an end view of the pantos apli;

Figure; .4 is a detailed side elevatien of a fragmental part of themechanism empleyed. for advancing the stylus carriage p y p, 0. nter t ey w ereby the yl s laus d" tQ. rav l a andv fortlt across the a designinffresh paths F igure b is a fragmentary vie'win the side elevationshowing the snap switch emp ey d'i;

Figure 6isa fragmentary end view of the pantograph machine looking fromthe op p sits ndw r m F ame Figure 7 is a detailed View of the tracing Pint o the, sty us;

Figure S is a plan viewof the construc- 01. shown I F gur 4,

Figure 9 is. a similar view of the snap switch depicted in'Figure 5";and

Figure 10 is .a fragmentary iew of an improved design'plate. i

Referringmore in detail to the drawings thenuineral 1 designates thebase of the machine having side standards 2 surmounting the sagne forsupporting the superstructure hereinafter described. Between. theStandardsQa pair of rails 3 are mounted on the base and run forwardlyand rearwardly thereof, and supported on these rails by wheels i is acarriage 5 which in turn supports a superposed, wheeled carriage fi fortransverse movement. A forwardlyextending stylus supporting arm 7carries the 13, the latter being supported from a carriage 14 whichtraverses, on wheels 15, a track 16in the superstructure.

An endless band 17 takes over pulleys or wheels 18 journaled at oppositeends of the different planes to receive the respective upper and lowerlengths of the band 17,

said magnets having detents so that when energized they will grip saidband. The magnets areselectively energized in a successive manner sothat only one will be operative while the other remains inoperative andby so successively engaging the upper and lower portions of the bandcause the carriage 14 to travel therewith back and forth over the rails16.

The successive or alternate operations of the magnets are effectedthrough a snap switch 25 embodying a pivoted arm 26 and a coil spring 27which acts to quickly move the arm in opposite directions from a deadcenter position. The outer end of the arm is connected to the oppositeends of a flexible wire or cable 28 which is supported on the wheels oridlers 29 and has its lower length passing through a guide tube 30, theopposite ends of which alternately engage fixed stops 31 adjustablycarried by the wire 28. Obviously, as the carriage 14 moves in onedirection, the forward end of tube 30 will engage its stop 31 and movethe same along therewith for effecting a pull on the wire which swingsthe switch arm 26 toward and beyond the dead center position and therebypermits the spring 27-to reverse the switch for bringing the idleelectrical magnet into play, and rendering the companion magnetinoperative, to cause a reverse travel of the carriage 14.

A drum 32 is journaled on the carriage 6 and is equipped with a toothedperipheral portion 88 designed to be engaged by a dog 34 to preventretrograde movement of the drum, A cable 35 has its opposite endssecured to the drum and from there passes around pulleys 36 and 37, thesame being journaled on vertical shafts on carriage 5, and on the upperend of the shaft supporting pulley 86 is fixed a pinion 38 that hasmeshing engagement with a rack 39 fixed relative to the base of themachine. 1-1 rack 40 is provided on carriage 5 and is traversed by apawl 41 which is pivoted to an arm 42 carrying a friction pawl 43 thatoperates to intermittently rotate the drum 32 in one direction only.

hen the carriage 6 hasreached its limit of movement and reverses itsmotion, the dog or pawl 41 will lift the arm 42 and cause partialrotation of the drum 32 which will exert a pull on the cable 85 andthereby impart rotary movement to the pulleys 86 and 37. Obviously,rotation of pulley 36 will cause the pinion 38 to ride on the rack 39and move the carriage 5 correspondingly rearwardly or forwardly. Thus itwill be seen that each return movement of the carriage 6 will cause thecarriage 5 to be advanced one step automatically until the stylus hastraced over the entire pattern.

The pattern or design plate is preferably of zinc and has the designpainted thereon with an electrical resist varnish. As an ex ample, thedesign 44 in Figure 10 is applied to the zinc plate by painting theresist varnish thereon.

Fixedly mounted on the superstructure or track 16 is an upright arm 46having a ournal bearing shaft 47 which carries on its outer end aradially slotted wheel 48 and on its inner end a pinion 49, the lattermeshing with a rack 50 carried. by the upper diamond bar or carriage 51.If two sets of diamonds are employed then the pinion 49 will also bemeshed with the rack 52 carried by a lower or second diamond bar 53.Each diamondbar is supported on respective track sections 54 by rolls orwheels 55. On the wheel 48 are a plurality of knobs 56 adjustableradially in the slots thereof whereby the knobs may be formed into acircular series that is variable in diameter. The carriage 14 isprovided at its opposite ends with uprights 57 and 58 the formercarrying an adjustable screw 59 and the latter carrying areel 60. A wireor flexible member 61 has one end anchored to the screw 59 and itsopposite end connected to the reel 60, the intermediate portion beinglooped about the circular series of knobs 56 so that when the carriage14 is moved the flexible drive member 61 will rotate the wheel 48 andthereby impart driving movement to the pinion 49, rack 50 and diamondbar 51, or to both racks and both diamond bars when two are employed. Byvarying the position of the knobs 56 in their slots the relativemovement between the diamond bar in carriage 14 may be accordinglyvaried. Thus, the transverse tracing movement of the stylus will beincreased or diminished when reproduced by the diamond points 62 on theroll 63. Each diamond point or cutter 62 is under the control of anelectrical magnet 64 which when energized will effect lifting of thediamond point from the roll.

The pattern or design plate 9 is grounded electrically into the bed 10of the machine from which the circuit passes through wire 45 to theserially connected electrical magnets 64, thence through wire 65 to abattery 66 and then through wire 67 and switch 66 to the stylus 8. Thiscircuit is such that when ithestylus comes in contact with the zincplate 19 and therethrough completes the electro-ina'gnet CII'CLHt themagnets 64k will be energized to lift the cutters from the rolltopreven't cutting ofthe varnish covercounter balance 73. The plate 72is'pro vided ,Wltli a series of radial slots in which are adjustablymounted a series of knobs 74L aboutwhich; passes a flexible member 75that has one end anchored by screw 76 to upright 77 and its Opposite endconnected to a reelI'ZS journale'd on upright 79, said uprightsbeing-carried on the forward and rearward sides of carriage 5. n a

Stretched between uprights '7? and 79 is rod 80 having ,a pair ofadjustable stops 81 to be engage'dby an arm 82wvhich is ear riedbyitheshaft extension ot the snap switch .25. The purpose or function of theadjustablestops 81 is to contact with the .arm 82 to throw the switchinthe event the pull wire .28, by reason of the non-functioningof thestops 31, fails to throw said switch.

ln operationithe. motor 21, which maybe :01 any suitable type operatesto mpart continuous *HIOVGll'lQIliZ to the belt or baml l7 and throughthe alternate engagements by themagnets QSand 2a a reciprocally movementis accordedithe carr age the lii'nits .ot reciprocation being determinedby the position-fotthe stops 31. Through the connection 12and 13 themovement of car *iage 1% is transmitted to carriage Sand the stylus arm7. Consequently the styluswill be reciprocated backand forth across thepattern or design plate and uponthe start or beginning, of each returninoven'ient of the carriage the pawl 41. actsto lift the arm 42,

swing under its pivot and permit lowering ,of the arm. which lOWGIlIlgmovement will result in partially rotating the drum 32 to take up andlet out thocz ble 35 which movement of the cable revolves the \Vliefiliii and 37 and. the pinion 38 to act on the rack The pawl ll will thusdrag through thegreater part or each sliding movementof the carriage 6and upon re versing this movement the pawl will swing from one side tothe other oi its pivotal mounting and each time efiiect lifting oi thearm lQflYlllCll automatically lowers, aided by spring; 84, to partiallyrotate the drum. Hence itwill be seen that each sliding, more IUGiit or"the carriage i3 over a new or sii portion of the pattern or design. Furtier- 39. .and thereby advance the carriage 5 inwardly one step.

j the bi more, each stepby step advance of thecar ria'ge 5 willimpart aproporti'onedte rotative' movement to the printing roll 68 by reason ofthe flexible member T5, which moves with said carriage 5 winding andunwinding about the series of knobs 74.. inent ot carriage 6proportionately trans mitted through the diamond bar or bars through thecarriage 1e, flexible member 61,

wheel &8, pinion 49 and. rack 50.' As the stylus traverses the patternit will alternatoly ride over varnished and unvariiished sections andcorresoondii'igly open and close the circuit, through magnet 64: toeffect a low ring'and lifting or the diamond cutreproduced accuratelyonthe roll with lesser orgreater proportions depending upon thepredetermined positioning of the knobsSG and 74; I

The current battery 86.- T he action of the stylus is such that in thecourse o't time it will move over the entire surtace'ot the designinpredetermined lines and tie action ot'rthe cutters will be underthecontrol of the stylus," being lifted during each reciprocation ofthecarriage 6' as many'times as the stylus rides oii' the varnished andlowered onto the roll as many times as there are portions oi varnishedsurfaces in its path. Thus the stylus through electrical means acts'tooperate the diamond cutters either upon the roll or off thesame-depending wholly upon whether the design, is

laid in with electrical resist or whether the design is the exposedmetallicplate. The operation therefore is accurate since the cutterscannot act upon the roll unless thestylus is travelling over a varnishedsurface.

l-lavingthus described my invention, what I claim as new and desire tosecure by Let.-

tersiPatent is 1- 1 1. A pantograph comprising a base, a bed thereon, acarriage movable forwardly and rearwardly on thebase, a styluscarriagesupported on the first carriage and movable transversely thereof, astylus supported on. the second carriage for tracinga design on v thebed, a superstructure on the base, a third carriage lilOVlllJlC on thelatter in a direction similar to the second carriage, a grooved railcarried by the second carriage and extend ing in the direction ofmovement o lhe first carriage a bracketstructure on the third carriagehaving a part slidable on therail and connect the second andthirdcarriages ,tfor tr .nsverse movement, a contin uously operatingendlessband, a pairot electrical magnets on the bracket having partsassociatedwith the sectional-lengths of out and adapted to the ies} tivelengths alternately'ivhereby the second ri'ace portions ontotheunvarnished sur; ice, portions of the zinc plate,

The sliding ino've- 7 'ters 62. ()bviously then the patternwill'be i 85p for magnets 28 andQ nay be. supplied through circuit wires 85 and aand third carriages will be moved reciprocatingly, an operating circuitfor the magnets including a reversible switch and a switch operatingmember extending along side the path of moycment of one of thecarriages,spaced stops on said switch operating member alternatelyengagcable by said carriage to effect a reverse throw of theswitch, aprinting roll support, a fan shaped plate connected to the roll supportandprovided with radial slots, knobs adjustable in the slots, a flexiblemember passing about the series of knobs and having its opposite endssecured to the first carriage whereby movement of the latter will beconverted and transmitted to the roll support into rotary motion, adiamond bar supported for movement on the superstructure, and avvariable transmission mechanism between the third car iage and thediamond bar.

2. In a pantograph, a diamond cutter, electrical means for moving thecutter out of cuttingposition, a stylus, a design embodying a metallicplate having portions of its surface covered with an electricalresistance material, and a circuit including said means, said designplate and said stylus, adapted to be closed by direct contact betweenthe stylus and the exposed portion of the plate.

3., In a pantograph, a cutter, a stylus, a design plate of metallic bodyhaving portions covered with a resistance element, and

means for moving thecutter out of cutting position when the stylus is incontact with one portion of the plate and for permitting movement of thecutter to cutting position when the stylus is in contact with anotherportion of the plate. I

4. In a pantograph, a cutter, an electromagnet for lifting the cutterfrom its work, a stylus, a'metallic design having portions exposed fordirect contact with the stylus, and an electric circuit connected on oneside to the stylus and on the other side to the design and includingsaid magnet.

5. In a pantograph, a cutter, a movable support therefor, stylus, meansfor converting the movement of the stylus into a different movement forthe cutter support, and electrical means underthe control of thostylusfor moving the cutter out of cut ting position. i

6. A pantograph comprising base, a bed thereon, a carriagemovableforwardly and rearwardly on the base, a stylus carriage supported on thefirst carriage and movable transversely thereof, a stylus supported onthe second carriagefor tracing a design on the bed, a super-structure onthe base, a third carriage movable on the'latter in a direction similarto the second carriage, a

grooved rail carried by the second carriage and extending in thedirection of movement of the first carriage, a bracket structure on thethird carriage having a part slidable on a switch operating memberextending along side the path of movement of one of the ing memberalternately engageable by said carnage to effect a reverse throw of theswltch, a work support, a cutter, and means for converting the movementof the stylus carriage into predetermined motion for the cutter. p

7. Apantograph comprising a base, a bed thereon, a carriage movableforwardly and rearwardly on the base, a stylus carriage supported on thefirst carriage and movable transversely thereof, a stylus supported onthe second carriage for tracing a design on the bed, super-structure onthe base, a third carriage movable on the latter in a direction similarto the second carriage, a grooved rail carried by the second carriageand extending in the direction of movement of the first carriage, abracket structure on the third carriage having a part slidable on therail and connecting the second and third carriages for transversemovement, a continnc-usly operating endless band, a pair of electricalmagnets on the bracket having parts associated with the sectionallengths of the band and adapted to engage the respective lengthsalternately whereby the second and third carriages will be movedreciprocatingly, an operating circuit for the magnets including areversible switch and a switch operating member extending along side thepath of movement of one of the carriages, spaced stops on said switchoperating member alternately engageable by said carriage to effect areverse throw of the switch, a printing roll support, a variabletransmission mechanism between the roll support and the first ca "riage,a diamond bar supported for movement on the superstructure, and avariable transmission mechanism between the third carriage and thediamond bar.

8. In a pantograph, a stylus, a cutter, and means for transforming themotion of the stylus to that of the cutter, said means including arotary member having radial slots.

a series of knobs adjustable in the slots, and.

a flexible member connected at its ends to one of said first twoelements and having its intermediate portion looped about the series ofknobs, said rotary member being connected to the other of said first twoelements.

carriages, spaced stops on said switch operatand the support, a worksupport, variable transmission means between the'latter andthe carnage,each of 'said means including stylus carriage, the rotary members being9. In a pantograph, a stylus, a cutter, and means for transforming themotion of the stylus into that of the cutter, said means said part. a eI 10. In a pantograph, a carriage supporting the same, acutter support,variable transmission means between the carriage a rotary member havingradially adjustable projections and a flexible mei'i'ib'or-apassingaboutthe projections and COllIlGCtQClTIO the connected to the work and"cutter supports. 11. In a pantograph'a continuously 1nov-' lDgGITCllGSSband, a reciprocatory carriage,

electrical: means carried by the latter for alternately engaging thetwotlights of the bandrto move the carriage back and forth, austylusconnected to the carriage for movement therewith, and means for,advancingthestylus step by stopover a design as it is traced by itsreciprocatory motion.

12. In: a. pantograph, a frame, a carriage movable thereon, astyluscarriage movable "back and forth acrossthe: firstcarriage, and

means for advancingthe first carriage intermittently by and duringreciprocation of the second carriage.

113;. In apantograph, a; frame, a carriage movable thereon, a styluscarriage movable wbackjand forth across the first carriage, a1,

fixed rack on the frame, a-pinion on, thefirst carriage cooperating withthe rack toadvance said carriage, and. means for intermittently rotatingthe pinion.

14'. In a pantograph, avframe, a carnage movable thereon, a styluscarriage movable back and forth across thefirst carriage, a fixed rackon the frame, a 13111101'101Ltl16 first carriage cooperating with the"rackto advance said carriage, meanson the second carriage to rotate the;pinion, and means onthe first .carriage cooperating with the aforesaidmeans toeffect intermittent 'movement thereof by and during movement ofthe second carriage; v

15. In a pantograph, a frame, a carriage movable. thereon, a styluscarriage movable back and forth across the first carriage, a

fixed rack on the frame, a pinion on, the

first carriage cooperating; with the rack to advance said carriage,means on the second 6O- the stylus im v rsa movement a oscillate the armby and during movement of the second. carriage to impart intermittentmovement to the mechanism andzpinion.

16. In a pantograph, a design plate havmg electrically conductive andnon-conductive surface portions, a cutter, means for;

rendering-the, latter operativeand inoperative and includlng anelectrically operative element, a stylus, and a clrcuit including thelatter, the. element, and: the conductive surface portion ofthe designplate and adapted to be closed upon bringing the stylus into contactwith-the conductive surface portion of the design plate. 17, In apantograph,a frame, a carriage on the first carriage, meanshavingoppositely moving parts for reciprocating the stylus carriage, Ielectrical means on the stylus carriage for operatively engaging saidparts alternately to effect such reciproca tion, and a cutter operableby the movement of the stylus carriage 7 18. In a pantogra-ph, a frame,a carriage moi-able thereon, a stylus carriage movable reverse switchfor. controlling said electrical means, an endless switch-throwingmember embodying spaced stops for cooperatingwith thereciprocatorymovements of the stylus carriage to effect the throwing oftheswltch, anda cutter controlled by the stylus car 19. In a pantograph,a cutter, electrical ineansfor lifting the cutter from its work,

stylus, and a circuit including said means andadapted to be closedthrough the stylus when the latter is operatively disposed.

20. Ina pantograph, awork support, means foroscillating-said worksupport, a stylus carriage, a second carriage support ng carriage andembodying spaced stops,- means under the control ofthe second carriagefor. imparting oscillating movement to the work support by and duringmovement of said second carriage, means for; reciprocating the styluscarriage, sa d last means having a part engageable by sa1d stopsfor-controlling its operation, a cutter, and means for converting themotion of the stylus carriage into. a predetermined motion for thecutter.

21. A design'plate for the electrical control of the cutter of apantograph, compris- *ing; electrically conductive and non conducground.a

n. pantesreph; a ed; a s y s m able t hereover, astylus carr agesupported Werk s ppo electrically operated cutters for operating on theworkin said support, a carriage sup- *porting the cutters, meansconnecting the cutters and stylus in circuit through a pattern on thebed, and means for transmitting the motion of the stylus carriage to thework support. i

23. In a pantograph, a bed, a stylus carriage supported for movementforwardly and rearwardlyand laterally relative thereto, a stylus on thecarriage for tracing a design on the bed, awork support, a diamond barsupported for movement relative there- 'to, a cutter on the'diamond bar,and means operable by'the stylus carriage during its forward andrearward movements for moving the work support.

member taking about said series of projections and having its endsconnected to the stylus carriage whereby upon forward movement of thelatter the flexible member will wind and unwind to impart rotarymovement to the shaft. I

2-5. In a pantograph, shed, a styluscar- 'riage movable lengthwise andlaterally thereoffa work support, a cooperating cutter controllable bythe stylus, and mecha-. 'nism for transmitting the movement of thestylus carriage in one direction to the cutter includingacuttercarriage, and a thirdcarriage intermediateto cutter and styluscarriages, and variable speed transmission means connecting the cutterand intermediate carriages.

26. In a pantograph, a: bed, a stylus carriage movable lengthwise and Ilaterally thereof, a work support, a cooperating cutter, a carriagesupporting the cutter and embodying a tooth portion, a pinion meshingwith said tooth portion, a rotatable member with which said pinion isconnected and provided with an expan'sible and contractible rim portion,a flexible member taking about the rim portion to have rolling contacttherewith, and a support movable by the stylus carriage and having theends of the flexible member anchored thereto,

527. In a pantograph, a bed, a stylus carriage movable lengthwise andlaterally thereof, awork support, a cooperating eut- "ter, a carriagesupporting the cutter, an intermediate carriage between the first twocarriages, varlable motion transmitting means connecting theintermediate and cutter carriages, and means for imparting the lateralmovements of the stylus carriage to the intermediate carriage.

28. In a pantograph, a bed, a stylus carriage movable lengthwise andlaterally thereof, awork support, a cooperating cutter, a carriagesupporting the cutter, an intermediate carriage between the first twocarthereof, a work support, a cooperating cutter, a carriage supportingthe cutter, an intermediate carriage between the first two carriages,variable motion transmitting means connecting the intermediate andcutter carriages, and means for imparting the lateral movements of thestylus carriage to the intermediate carriage including a bracket mountedon one carriage and having slidable connection with the other'carriage,and means for moving the stylus carriage embodying an endless drivemember, and means carried by the bracket for selectively engaging eitherflight of the endless member.

30. In a pantograph, a bed, a stylus carriage movable lengthwise andlaterally thereof, a work support, a cooperating cutter, a carriagesupporting the cutter, an intermediate carriage between the first twocarriages, variable motion-transmitting means connecting theintermediate and cutter carriages, and means for imparting reciprocatorymotion to the stylus and intermediate carriages.

3].. In a pantograph, a bed, a stylus carriage movable laterally andlengthwise thereof, a work support, a cutter cooperating therewith,means for reciprocating the stylus carriage in one direction, and meansoperable by the carriage for intermittently imparting movement to thecarriage at an angle to such reciprocatory motion.

32. In a pantograph, a bed, a stylus carriage movable laterally andlengthwise thereof. a work support, a. cutter cooperating therewith, andmeans for reciprocating the carriage in one direction and moving it stepby step transversely of such reciprocatory movement.

33. Ina pantograph, a bed, a stylus carriage movable laterally andlengthwise thereof, a work support, a cutter cooperating therewith, adrive mechanism including oppositely moving parts, and means foralternately engaging said parts to effect reciprocation of the carriage.

. 34. In a pantograph, a bed, a stylus 'car riage movable laterally andlengthwise thereof, a work support, a cutter cooperating therewith, adrive mechanism including oppositely moving parts, means connected toriage movable laterally and lengthwisethereof,- a work support, a cuttercooperatthe'carri'ag'e and alternately engageablewith said parts toeffect reciprocation of the car riage,and means operable by the carriageto ing oppositely moving parts, and electrical means for alternatelyconnecting the carriage tosaid parts;

36. In a panto'graph, bed, a stylus caring therewith, a drive 'mechanismincluding oppositely moving parts, electro magnets connected to thestyluscarriageand each adapted toengage afrespective; part of saiddrivemechanism', and means under the contr'ol of" the carriage foreffecting alternate functioning of the-eleetro magneto.

ria ge movable laterally and lengthwise oppositely moving. parts, clutchdevices 1 movable with the carriageand associated with tlie'r'espect'iveparts of the drive mechx anism to engagesaid parts, and means oralternately operating the clutch devices.

38; Ina 'pantograph, a' bed, a stylus carriage movable laterally andlengthwise thereof, a work support, a cutter cooperatin'g therewith, adrive mechanism ineluding oppositely moving parts, clutch devicesmovable with the carriage and assoclated wlth the respective parts ofthe drive mechamsm to engage said parts, elec-.

trical means for alternately operating the clutch devices including aswitch, and means placing the switch under the control ofthe carriage byand during movement thereof.

39. In a pantograph, a bed, a stylus carriage movable laterally andlengthwise thereof, a work support, a cutter cooperating therewith, adrive mechanism including oppositely moving parts, clutch devicesmovable with the carriage and associated with. the respective parts ofthe drive mechanism to engage said parts, electrical means foralternately operating the clutch devices including a switch, a switchoperating member, and adjustable stops thereon for engagement by thecarriage at itsopposite limits of movement for operating the switch.

40. In a pantograph, a bed, a stylus carriage movable laterally andlengthwise thereof, a work support, a cutter cooperating therewith, adrive mechanism including oppositely moving parts, clutch devicesmovable with the carriage and associated with the respective parts ofthe drive mechanism to engage said parts, meanstor alternately operatingthe clutch devices,

and means for moving the carriage step by mechanism to engage saidpartsmneans for movable with the carriagcand associatedmovable p: 't

step transversely of the pathofreciproca= tion thereof. i i

-fll. In pantograph, a bed, a stylus carriage movable laterally andlengthwise thereof, a "orksupport', a cutter cooperau ingtherewith adrive mechanism including oppositely moving parts, clutch devicesmovable with the carriage and associated with the. respective parts ofthe drive,

alternately operating the clutch devices, a rackextending transverselyof the'path of reciprocation of said carriage, apinion meshing with saidrack, and means operable by and during the reciprocation of said ear---riage for imparting intermittent rotary movement to the pinion to eliecta corresponding movement o'lf the carriage trans verse to its pathofreciprocation.

In a panto ph,-a bedya stylus car-' ge n'iovable lat UI' and lengthwiseiereoi', a work support cutter cooperattherewith,a drive in ianismincluding ppositelv moving pdliS, clutch devices with the respectiveparts of the drive mechanism to enga said parts, meansior alternatelyoperct the clutch device, meansl or intermittently moving the car riagetransversely ol the reciprocatory path thereof by and during suchmovements,said means embodying part movably carried by the rarriage,atoo'thed member extendi." aleng'the path of reciprocation, and a pawlcarried hysaidmovable part for trailover said toothed member and adaptedto engage with a tooth ther'eot upon the beginning otteach reciprocationto raise said and move thereunder to again trail over said toothedmember and by raising said movable part to efiect such transcarriage.

verse movement of tie 4L3. In a pantograph, a bed, a stylus carriagemovable laterally and lengthwise thereof, a wori; support, a cuttercooperating therewith, a drive mechanism including oppositely movingparts, clutch devices movable with the carriage and associated with therespective parts of the drive mechanismtc engage said parts, means forL15 alternately operating'the clutch device, a

second carriage supporting the stylus carand downward oscillation of thearm effected through the swinging of the pawl beneath its pivotalmounting, an endless cable taking about the drum, a pulley journaled onthe second carriage and about ing therewith, a drive mechanism includingoppositely moving parts, clutch devices movable with the carriage andassociated with the respect ve parts of the drive mechanism to engagesaid parts, means for alter- I nately operating the clutch device, asecond carriage supporting the stylus carriage for reciprocatorymovement and movable itselfv in a transverse direction, and meanscarried by in part and operable by and during movement of the styluscarriage for moving the second carriage.

45. In a pa-ntograph, a bed, a stylus carriage movable laterally andlengthwise thereof, a work support, a cutter cooperating therewith, adrive mechanism including oppositely moving parts,clutch devices movablewith the carriage and associated with the respective. parts of the drivemechanism to engage said parts, electrical means for alternatelyoperating the clutch devices ineluding a switch, a second carriagesupporting the stylus carriage for reciprocatorv movement and movableitself in a transverse direction, andspaced stops arranged on the.

second carriage for controlling the switch.

46. In apantograph, a bed, a stylus carriage movable laterally andlengthwise riage, and an arm connected to the switch and extendingbetween stops. 7 I p i? In a pantogra-ph, a bed, a styluscarriagemovable laterally and lengthwise thereof, a work support, a cuttercooperating therewith, a drive mechanism including oppositely movingparts, clutch devices mov able with the carriage and associated with therespective parts of the drive mechanism to engage said parts, electricalmeans for alternately operating the clutch devices including a switch, asecond carriage supporting the stylus carriage for reci n'ocatorymovement and movable itself in a transverse direction, and motiontransmission means connecting the second'carriage to the work support.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. v

' \VILLIAM Hf HOPE. lVitnesses i M. A. KINesLEY,

J. A. MILLER.

